I know how you feel! I had no lab experience and my biggest problems initially were basic things such as how to make and dilute stock solutions, remembering what molarity meant, how to calculate how to make a working solution, what an autoclave was... honestly it was difficult! People would say to me 'follow this protocol, it's easy' and I would look at it for hours like it was in a foreign language!
Then, once I got to grips with that, the next challenge was thinking about how to set positive and negative controls - I felt like I was always going to have to be reminded by my supervisors, now I do it without even thinking about it.
I look back now and I think how far I have come! You will do the same eventually, trust me.